This is not directed at anyone in particular, but:
"syncing" with a cloud service - stupid
not backing up - stupid
"syncing" with a cloud service - stupid
not backing up - stupid
The problem with "syncing" is if I delete a file on one device, what does sync semantics say should happen? It is ambiguous, which is why syncing is a stupid semantic. Copying files and deleting files is unambiguous.